US3222238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for bonding rubber to linear condensation polyester structures
Assignee: EIDP Inc
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Filing: 1962-05-22
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Granted: 1965-12-07
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Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 Henry R Krysiak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:16
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
THE PROCESS FOR BONDING RUBBER TO A SHAPED STRUCTURE COMPOSED OF A LINEAR CONDENSATION POLYESTER WHICH COMPRISES (1) COATING THE STRUCTURE WITH AN AQUEOUS MEDIUM CONTAINING ABOUT 5% TO ABOUT 25% BY WEIGHT OF DISPERSED SOLIDS OF (A) POLYEPOXIDE HAVING AN EPOXY EQUIVALENT PER 100 GRAMS GREATER THAN ABOUT 0.20 AND AN AVERAGE OF AT LEAST ABOUT TWO EPOXY GROUPS PER MOLECULE, A MELTING POINT BELOW ABOUT 150*C., AND AN AVERAGE MOLECULAR WEIGHT BELOW ABOUT 3000, (B) EPSILON-CAPROLACTAM IN A MOL RATION OF THE POLYEPOXIDE TO THE CAPROLACTAM THE RANGE FROM ABOUT 0.05 TO ABOUT 10.0 AND (C) A CATALYTIC AMOUNT OF CAPROLACTAM POLYMERIZATION INITIATOR; (2) REACTING THE POLYEPOXIDE WITH THE CAPROLACTAM BY HEATING THE COATED STRUCTURE TO A TEMPERATURE ABOVE 210* C. AND BELOW THE MELTING POINT OF THE POLYESTER UNTIL THE COATING IS DRY; (3) OVERCOATING THE STRUCTURE WITH AN AQUEOUS PHENOL-ALDEHYDE AND BUTADIENE-VINYL PYRIDENE RUBBER LATEX MIXTURE; (4) DRYING AND CURIN THE OVERCOATING; (5) APPLYING AND CURING A LAYER OF RUBBER ON THE COATED STRUCTURE.
Claim 2
Dependent Claim
168 words
THE PROCESS FOR BONDING RUBBER TO A SHAPED STRUCTURE COMPOSED OF A LINEAR CONDENSATION POLYESTER WHICH COMPRISES (1) COATING THE STRUCTURE WITH AN AQUEOUS MEDIUM CONTAINING ABOUT 5% TO ABOUT 25% BY WEIGHT OF DISPERSED SOLIDS OF (A) POLYEPOXIDE HAVING AN EPOXY EQUIVALENT PER 100 GRAMS GREATER THAN ABOUT 0.20 AND AN AVERAGE OF AT LEAST ABOUT TWO EPOXY GROUPS PER MOLECULE, A MELTING POINT BELOW ABOUT 150*C., AND AN AVERAGE MOLECULAR WEIGHT BELOW ABOUT 3000, (B) EPSILON-CAPROLACTAM IN A MOL RATION OF THE POLYEPOXIDE TO THE CAPROLACTAM THE RANGE FROM ABOUT 0.05 TO ABOUT 10.0 AND (C) A CATALYTIC AMOUNT OF CAPROLACTAM POLYMERIZATION INITIATOR; (2) REACTING THE POLYEPOXIDE WITH THE CAPROLACTAM BY HEATING THE COATED STRUCTURE TO A TEMPERATURE ABOVE 210* C. AND BELOW THE MELTING POINT OF THE POLYESTER UNTIL THE COATING IS DRY; (3) OVERCOATING THE STRUCTURE WITH AN AQUEOUS PHENOL-ALDEHYDE AND BUTADIENE-VINYL PYRIDENE RUBBER LATEX MIXTURE; (4) DRYING AND CURIN THE OVERCOATING; (5) APPLYING AND CURING A LAYER OF RUBBER ON THE COATED STRUCTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |